so I'm trying to see what's the fastest way to write to Chronicle Queue in a multithread env so I have the following:
public static void main(String[] args) throws Exception{
final String path = args[0];
int times = Integer.parseInt(args[1]);
int num = Integer.parseInt(args[2]);
AtomicInteger nextid = new AtomicInteger(0);
ThreadLocal<Integer> id = ThreadLocal.withInitial(() -> nextid.getAndIncrement());
ChronicleTest test = new ChronicleTest();
ChronicleWriter writer = test.new ChronicleWriter(path);
CountDownLatch start = new CountDownLatch(1);
CountDownLatch done = new CountDownLatch(num);
Thread[] threads = new Thread[num];
long[] samples = new long[times * num];
for (int i = 0; i < num; i ++) {
threads[i] = new Thread(new Runnable() {
@Override
public void run() {
try {
start.await();
for (int i = 0; i < times; i++) {
int j = i + times*id.get().intValue();
long s = System.nanoTime();
writer.write(j + " DGirr5JgGVmxhvmaoO0c5MVVOUIEJxWa6nVStPnqmRl3T4hKE9tiwNjn6322uhgr2Fs4hDG8aKYvIB4O0733fx18EqGqNsshaSKoouky5ZekGK3vO87nfSUOz6uDD0olOp35QJQKPgr7tNlFgQP7BImcCyMPFCCm3yhSvOUgiVAD9W9BC3cqlKjQebOG4EkqzRIzwZjxbnIeK2YttfrvOvUJs0e9WBhXUVibi5Ks2j9ROQu2q0PJII4NYyN1a5YW2UKxyng3bRrtBVFqMSamtFzJ23EE4Y7rbQyeCVJhIKRM1LRvcGLUYZqKICWwDtOjGcbXUIlLLYiJcnVRZ4gNRvbFXvTL4XDjhD3uP5S8DjnkeAIBZcQ4VEUf30x65pTGLhWjOMV6jtiEQOWKB3nsuPMhcS1lP3wTQztViW7T8IsQlA5kvVAsnT5A7pojS1CffcYz4a2Rwqf9w6mhTPPZXgpDGArtThW3a69rwjsQxEY9aTwi0Pu0jlSAMmvOA158QFsSeJvLoJXILfocgjNEkj7iVcO0Rc6eC6b5EhJU3wv80EEHnORMXpQVuAuPyao7vJsx06TMcXf9t7Py4qxplVPhptIzrKs2qke2t5A8O4LQzq19OfEQsQGEjqHSbnfWXjfuntuFR8rV4VMyLZO1z3K7HmHtCEy14p5u0C0lj7vmtCnrOum0bnG2MwaAR7DJPIpOtwRObli5K5grv54AWnJyagpRX5e3eTEA8NAKO8oDZuLaoCvgavv9ciFrJcIDmyleVweiVrHs1fQXJoELzFpH4BmvzBuUjfZ8ORSIZsVuq4Hpls19GIA8opb1mSBt7MTifLPauo8WDWRoNi9DvjL4Z08Je6DvrhAFXasU2CMugg5EZ06OXexU17qnvxx2Vz9s9E5U50jDemySZ78KcZ6nqhQKIXUrkTktoEan2JXxI2NNSqEYifwly8ZO2MDquPe4J11rAcOqYp9y6Kb4NtFpNysM1evrLPvCx8oe");
long e = System.nanoTime();
samples[j] = e - s;
}
done.countDown();
} catch (Exception e){
e.printStackTrace();
}
}
});
}
for (int i = 0; i < num; i ++) {
try {
threads[i].start();
} catch (Exception e){
}
}
long startT = System.currentTimeMillis();
start.countDown();
done.await();
long endT = System.currentTimeMillis();
System.out.println("Time to complete [" + times + "] iteration in [" + (endT - startT) + " ms] and threads [" + num + "]");
System.out.println("#######");
for (int i = 0; i < times * num; i ++){
System.out.println(samples[i]);
}
}
private class ChronicleWriter {
SingleChronicleQueue m_cqueue;
ThreadLocal<ExcerptAppender> m_appender;
ChronicleWriter(String path ) {
m_cqueue = SingleChronicleQueueBuilder.binary(path).build();
m_appender = new ThreadLocal<ExcerptAppender>() {
protected ExcerptAppender initialValue() {
return m_cqueue.acquireAppender();
}
};
}
void write(String msg){
m_appender.get().writeText(msg);
}
}
And I ran with parameters: path 2500 40
For some reason, this keeps crashing with core dump. What am I doing wrong? My disk has lots of disk space so that shouldn't matter. Thanks!!
